The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	CEBus demonstration system
Author:	Chen, Liang-Chuang
View Online:	njit-etd1994-014 (xi, 80 pages ~ 3.8 MB pdf)
Department:	Department of Electrical and Computer Engineering
Degree:	Master of Science
Program:	Electrical Engineering
Document Type:	Thesis
Advisory Committee:	Robbi, Anthony D. (Committee co-chair) Manikopoulos, Constantine N. (Committee co-chair) Carpinelli, John D. (Committee member)
Date:	1994-10
Keywords:	CEBus (Computer Network Standard) Household Appliances--Automatic Control
Availability:	Unrestricted
Abstract:	A CEBus demonstration system is constructed and applied to aspects of home automation security. Two M68HC16Z1 evaluation boards are used as CEBus nodes. Two CEBus spread spectrum power line modems (SSC PLCEMS) interconnect the nodes. An SSC PLCEMS handles all spread spectrum signal generation and reception. The application programs in the two boards are written in assembly language based upon CAL (Common Application Language), a CEBus standard. The standard CEBus frame format and FCS (Frame Check Sequence) are implemented by software in the Data Link Layer. Encoding and decoding binary information into UST format are implemented in the Physical Layer. The system responsiveness of 30 millisec was measured experimentally for a case with 3 information bytes. The noise sensitivity was measured experimentally with a straight 3-wire connection of the modems with and without AC power. The distorted AC line caused a packet error rate of 2%, a higher rate than obtained by injecting broadband random noise.